Discussion Forum

If all you want to do is plot an already-available computed quantity around a circle, and you already have the circle (the curve) defined in your geometry, and you already have executed the model run successfully, THEN: In the Model Builder, right-click on Results. Choose 1D Plot Group. Right-click that 1D Plot Group and select Line Graph. Under Settings, expand Selection. Now use the mouse to select the circle so its segments (by default, a circle has 4) appear in the list of selected items there. Go back to the top of the settings window and click "Plot." This will plot the quantity vs. arc length around the circle you selected. But you can change that if you want, in the settings window under x-axis Data, where you can choose the Parameter. In your case, you may wish to enter an Expression. For example, atan2(y,x) may yield an angle of interest to you? I hope that helps. If your circle isn't centered around the origin, you may need some other expression to correspond to angle.

Hi Robert,

Thank you, that did it. However, when I plot wrt angle, the startpoint and endpoint is connected with a line. See attached. Any ideas on how to get rid of it please?

Kind regards, Robert

If you don't like seeing the return line, there are various solutions to that. You can always export the plot and use a different plotting tool. You can set the options so that you simply plot the points and not any line that connects them. Or, you can create a circle with a tiny gap in an appropriate location, so the plot doesn't hit the double-valued-angle point twice. Or you can plot your quantity vs arc length, but then scale that x-value so the arc length runs from 0 to 360 units (thereby creating a 0 to 360 deg plot). I think there are several other ways. Don't be afraid to experiment a little!